BibTeX
@TECHREPORT{Taylor99virtualkeyboards,
author = {Camillo J. Taylor},
title = {Virtual Keyboards},
institution = {},
year = {1999}
}
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Abstract
This paper describes a novel scheme for vision-based human computer interaction in which traditional input and output devices, monitors, keyboards and mice, are replaced with augmented reality displays, projection systems and cameras. User input is accomplished by projecting an image of the interface onto a flat surface in the scene which is monitored with a video camera. The scheme hinges on the observation that the relationship between the three surfaces of interest, the work surface, the virtual keyboard and the image obtained by the camera, can be characterized by projective transformations of RP 2 . This observation leads to a fast and accurate online calibration algorithm. The basic advantage of the vision based interaction techniques proposed in this paper is that they do not involve mechanical input devices such as keyboards, mice and touch screens. There are no moving parts and no wires to connect to the interface surface. By avoiding a physical instantiation of t...
Keyphrases
virtual keyboard basic advantage novel scheme augmented reality display output device accurate online calibration algorithm work surface vision-based human computer interaction physical instantiation interaction technique flat surface interface surface mechanical input device projection system touch screen video camera projective transformation traditional input user input
